Range



No. 749,304. PATENTBD JAN. 12, 1904.

\ LG. KRONVALL.

`RANGE.

APPLICATION FILED MAY 1B, 1903. N0 MODEL.

I?? Ven/orf Patented January 12, 1904.

' PATENT OFFICE.

KRONVALL, OF CHICAGO, ILLINOIS.

RANGE.

SPECIFICATION forming part of Letters PatentNo. 749,304, dated January12, 1904.

Aminata; mea May 1s, 19.03.

.T all whom it 11d/Ly concern; y. i

Be it known that I, KARL G. KRoNvALL, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, .haveinvented certain new and useful Improvements in Ranges, of which thefollowing is a specification.,

This invention relates to improvements in cooking-ranges, and while itis more especially intended for large ranges, such as are used in hotelsand restaurants, yet it is applicable to the smaller ones or those usedin households; and it consists in certain peculiarities of theconstruction, novel arrangement, and operation of the various partsthereof, as will be hereinafter more fully set forth and specic- Vallyclaimed.

In large ranges, as well as in smaller ones,

-as heretofore made the top plates are caused to to escape between`their edges and the edges i `of the supporting plate or top of therange, so

that new plates are frequently required.

In ranges of the general or well-known construction the combustion ofthe fuel is imperfect, for the reason the oxygen in the air 1s consumedin the fire-box or as it enters the same, thus allowing large quantitiesof the fuel to pass out through the smoke-flue in the form of unconsumedparticlesiof carbon.

One of themain objects, therefore, of my, invention isto furnish a rangewhich shall be `so constructed that the tendency of the top plates tobuckle or warp will be reduced to a minimum, thus rendering the rangemore durable.

Another object of the invention is toafford means for automaticallysupplying fresh air and oxygen to the combustion-chambers at the rearofthe fire-box, thus causing more perfect combustion of the fuel. j

A still further object of the invention is to so Vconstruct the rangethat the oven will be subjected to heat on all of its sides but one,

Serial No. 157,579. (No model.)

thereby attaining a-uniform degree of heat at any point in the oven.

In order to enable others skilled in the art to which my inventionpertains to make and 4use the same, I will now proceed to describe it,referring to the accompanying drawings, in whichn Figure 1 is aperspective view of a range embodying my invention, showing the door tothe oven removed and illustrating the bottom and one of the side wallsthereof broken away to illustrate the passages or ways for the heat andsmoke. Fig. 2 is a longitudinal sectional view, partly in elevation,taken on line 2 2 of Fig. 3 looking in the direction indicated by thearrows. Fig. 3 is a cross-sectional view taken on line 3 3 of Fig. 2looking in the direction indicated by the arrows. Fig. 4 is a similarview taken on line 4 4 of Fig. 2 looking in the direction indicated bythe arrows; and Fig. 5 is a plan sectional view of a portion of theouter casing and a part of the oven, showing the heat-deflectors.

Like numerals of reference refer to corresponding parts throughout thedifferent views of the drawings.

The numeral 10 represents the outer casing, which is preferablyrectangular, as shown, and has secured on its upper surface a top 11,which extends over the back of the casing 10, Aas shown in Fig. 1, andis provided with an outlet-pipe 12, which communicates with thestovepipc or flue (not shown) and the interior or cavity of the casing.Located within the casing 10 and secured at its front edges to the frontwall13 of the casing is the rectangularshaped oven 14, which is sosituated that all of its walls, aswell as its top and bottom, except itsfront portion, are at a distance from the casing, so that the heat maypass therearound. Located horizontally below the bottom 15 of the ovenis a partition 16, which is secured to the casing and to the innersurface of the wall 17 of the oven adjacent to the firebox 18, in whichthe `ordinary grate and reback may be located in the well-known or anysuitable manner. Secured obliquely on the partition 16 and extendingfrom the rear wall of the casing 10 to about the middle of the bottom ofthe oven and resting against the IOO lower surface of said bottom is adeiiector 19,

which will cause the heated currents as they pass over the topyand endof the oven opposite theire-boxtopursue the course indicated by thearrows in Fig. 5, thus subjecting the entire bottom of the oven to theaction of Y the heat of said currents. ,Located between "the rear wallVof thecasing'and the rear wall of the oven"is"anotlier` deiiector 21,which extends in an inclined position from near the lower portion ofVthe wall 17 of the oven to near the top thereof, as is clearly shown bydotted lines in Fig. 2 of the drawings, in which figure it willl beobserved that said deiiector lies diagonally below the outlet 12, whichleads to the flue;A Located on the middle of the top 2 0 of the oven andextending from the re-box orcompartment 18 to the end of thecasing'opposite the same is a conduit 22,which may be made of anysuitable material and has in each of its sides near its end adjacent tothe lsage 'of fresh air.

ire-box a vdischarge-opening 23 Afor the pasoppo'site the ire-box isprovided with an inletlopening 24, which opening-may be located ontheupper surface of the conduit, as shown in Fig. 2, and register with 'anopening 25 in the' topf11 ofthe casing, as shown in Fig. 2 of thedrawings, or it may be located in the end of the conduit, as shown at26in Fig. 4

of the drawings. The end of the conduit 22 i 'adjacent to the re-box 18ispreferably provided .with a detachable plate 27, which-.will

protect the conduit from the intense heat of the fire and which mayberenewed when de-y -stroyed by the heat. f is provided-above the oven andfire-box with The top 11 of ltlie range a rectangular opening 28,--inwhich are located sectional-plates 29 and 30, 'the latter of which maybeprovided with circular openings 31 to receive a removable lid 32,-/asusual.f *The` outerfedgesofcsaid sectionall'platesjrest on ledges 33 atthe edges of the "o1i ening` 28, and

the inner edges -of said platesfreston the top of theV conduit 22, aslshown" in Fig. 3`of the drawings.

. 'From` the foregoing' and by reference to the drawings it will bereadilyseen and clearly -understood thatas the kheat passes from thefire box` or compartment 18 it will travel over the top 20 oftheoven'and on each side of the conduit 22,9111'whichvvoperation freshair and I oxygen ,will bei-supplied to the iiames, thus creatingmore'fperfect combustion. From the channellbetweensthe top of the rangeand the l topv oftlie oven the heated currents will pass 'downwardlybetween the walls of the oven andthe casing at the opposite end of therange from theii're-box, from which channel they will vpass' under thebottom 15 of the oven, in

which operation they will strike the deflector I '19, thus causing themto pass toward the front of the casing, from whence their course will bechanged toward the rear thereof by reason- The end of the conduit 22thereby be rendered more durable and less liable to warp or buckle.

Having thus fully described myinvention, what I claim as new, and desireto secure by Letters Patent, is-y 1. A range comprising -a casing havingan outlet for the smoke and gases and an openying in its top, of an ovenlocated in the casing at a'distance'from itswall as Well as-its top land bottom, a conduit extending from the fire,- box between the topsofthe oven and casing and having openmgs near its ends, a series ofplates located inthe opening of the casing and suitably supportedthereon at their vouter edges, their inner edges resting on and beingsupported by vthe conduit, a deiiector extending obliquely and forwardlyfrom the rear wall of the casing between the bottoms of the oven andcasing, and another deflector located in an inclined position betweenthe casing and the rear wall of the oven, substantially as described.

2.- The combination with the casing having in one of its ends a fire-boxand provided with an outlet for the smoke and gases, of an oven Alocatedin the casing at a distance. from its lwalls as well as its top andbottom, a conduit extending from the re-box between the tops of the ovenand casing and having openings near its ends, a deflector extendingobliquely and forwardly from the rear wall of' the casing between thebottoms of the oven and casing, and another deflector located in an in`'clined position between the casing and the rear wall of the oven,substantially as described.

3. The combination with the casing having an outlet for the smokeandlgases, of an oven located therein so that it will bef'at a distancefrom all of the wallsfexcept one, as well as from the top and bottom ofthe casing, a delector extendingA obliquely' and forwardly from the rearwall of the casing between its bottom and the bottom-of the oven, andanother deiiector located'in an kinclined position between thecasingandthe rear wall of thel oven and extending from near the bottom of theoven to near its "top, substantially as described; l p

. KARL e. KRoNvALL.

Witnesses: i i. j CHAs.` C. TILLMAN,

A. Grus'rAFsoN.`

IOO

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